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Table 4 Association of EGFR T790M mutation in exon 20 with different variables of thyroid cancer patients

From: Spectrum of EGFR mutation and its relation with high-risk predictors in thyroid cancer in Kashmiri population: 2 years prospective study at a tertiary care hospital

Variable

Cases

n = 60

EGFR T790M mutation

(n = 60)

OR (95% CI)

P value

Mutants

n = 05

(8.4%)

Wild type

n = 55

(91.6%)

Gender

   

0.4(0.04–3.5)

0.31

 Female

44(73.0)

05(11.4)

39(88.6)

  

 Male

16(27.0)

00(0.0)

16(100.0)

  

Age in years

   

2.12(0.3–14.2)

0.59

 < 45

45(75.0)

03(6.7)

42(93.3)

  

 ≥ 45

15(25.0)

02(13.3)

13(86.6)

  

Habitation

   

0.8(0.08–7.2)

1.00

 Rural

51(85.0)

05(9.9)

46(90.1)

  

 Urban

09(15.0)

00(0.0)

09(100.0)

  

Marital status

   

0.15(0.01–1.4)

0.15

 Unmarried

25(41.6)

04(16.0)

21(84.0)

  

 Married

35(53.4)

01(1.9)

34(97.1)

  

Use of OCP

   

0.7(0.07–6.8)

1.00

 Yes

05(8.4)

00(0.0)

05(100.0)

  

 No

55(91.6)

05(9.0)

50(91.0)

  

Smoking status

   

0.7(0.07–6.3)

0.57

 Non-smoker

50(83.4)

05(10.0)

45(90.0)

  

 Smoker

10(16.6)

00(0.0)

10(100.0)

  

TSH levels

   

3.5(0.3–34.1)

0.36

 Elevated

27(45.0)

01(3.8)

26(96.2)

  

 Normal

33(55.0)

04(12.2)

29(87.8)

  

Serum calcium

   

0.5(0.04–4.5)

0.65

 Normal

40(66.6)

04(10.0)

36(90.0)

  

 Decreased

20(33.4)

01(5.0)

19(95.0)

  

Initial PPX

   

1.4(0.1–13.8)

1.00

 Swelling

55(91.6)

05(9.0)

50(91.0)

  

 Incidental detection

05(8.4)

00(0.0)

05(100.0)

  

BTD

   

0.7(0.07–6.8)

1.00

 Yes

05(80.0)

00(0.0)

05(100.0)

  

 No

55(20.0)

05(9.0)

50(91.0)

  

Histological types

   

1.0(0.1–9.8)

1.00

 Papillary

48(80.0)

04(8.3)

44(91.7)

  

 Follicular

12(20.0)

01(8.3)

11(91.7)

  

Grade

   

0.5(0.05–4.9)

1.00

 WD

41(68.4)

04(9.7)

37(90.3)

  

 PD

19(31.6)

01(5.3)

18(94.7)

  

Stage, < 45 years

   

0.4(0.03–3.5)

0.27

 Stage I

28(46.6)

03(10.7)

25(89.3)

  

 Stage II

17(28.4)

00(0.0)

17(100.0)

  

Stage, ≥ 45 years

   

0.4(0.03–4.5)

0.48

 Stage I and II

09(15.0)

02(22.3)

07(77.7)

  

 Stage III and above

06(10.0)

00(0.0)

06(100.0)

  

V/C invasion

   

8.2(0.9–73.0)

0.01*

 Present

32(53.4)

00(0.0)

32(100.0)

  

 Absent

28(46.6)

05(17.8)

23(82.2)

  

LN metastasis

   

1.6(0.17–15.8)

1.00

 Present

17(28.4)

01(5.8)

16(94.2)

  

 Absent

43(71.6)

04(9.4)

39(90.6)

  
  1. OCP = oral contraceptive, TSH = thyroid-stimulating hormone, PPX = presentation, BTD = benign thyroid disease, WD = well differentiated, PD = poorly differentiated, VC = vascular capsular, LN = lymph node
  2. P value by chi-square test or Fisher’s exact test, whichever appropriate
  3. *Statistically significant (P value < 0.05)